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Brain-computer interface (BCI) has been used as a communication tool to enable paralyzed people to interact with the world. Its application has been extended to other non-medical areas like self-regulation, marketing, games and entertainment. Conventionally, BCI largely relies on the visual perception channel to provide users with cues or stimuli for the generation of appropriate brain signals that...
Virtual Reality may be considered a computational tool often used to aid in medical training, specially in surgical training. That allows surgeons to gain dexterity and experience in surgery without risking real patient lifes, reducing the probability of medical errors to occur, henceforth providing a better quality of life to patients. Due to the fragility of the human eye, more than most other areas...
Vibrotactile stimulation to the gluteal or back regions through seats is a promising approach to deliver supplemental information to humans. Designing a method to achieve pleasant vibrotactile stimuli was addressed in this study, as such stimuli tend to result in unpleasant experiences for users. In particular, we investigated the properties of continual vibrotactile stimulation to the gluteal region...
Visual feedback is a very important component for re-learning motor tasks in post stroke recovery. In this paper, a virtual reality (VR) based system for stroke recovery for upper limbs is described, where the patient is immersed with the help of a Head Mounted Display (HMD). The HMD renders a 3D scene containing the avatar of the patient, from a virtual camera position placed on the head of the avatar...
Mixed reality (MR) technologies can virtually change the appearance of real objects in real time without changing the material attributes of the objects and the associated haptic stimuli. In this study, we use MR-based visuo—haptic to investigate the mechanisms by which vision and haptics interact. In contrast to MR, diminished reality (DR) can virtually erase a real object from our sight. Because...
Autism and Autism Spectrum Disorders (ASD) are general terms for a group of complex disorders of brain development. Autistic children exhibit certain characteristics in varying degrees including difficulties in verbal/non-verbal communication, social interaction and repetitive behaviors. This paper discusses the role of Virtual Learning Environments (VLEs) in helping autistic children learn science...
Task outcome feedback is often used to sustain human work motivation and ensure overall productivity. Feedback can also be useful for reducing learning periods for new tasks. Two types of feedback, including knowledge of results (KR) and knowledge of performance (KP), are commonly delivered as part of motor training by using various sensory modalities (e.g., visual, auditory or kinesthetic). Unfortunately,...
Highly automated driving tremendously reduces workload of drivers. However, the drivers may lose their visual attention to road ahead due to the out-of-the-loop problem. Haptic guidance has been developed to reduce drivers' workload while keeping the drivers in the control loop. The haptic guidance system continuously provides assistant torques on the steering wheel so that both the driver and the...
A mathematical model of 4 degrees of freedom of forward and inverse kinematics is presented to provide visual and haptic guidance for laparoscopic surgery skills training. Also, a particle swarm optimization technique with color marker detection is used to estimate the instrument tip position accurately. Using a simple heuristic for the visual guidance, inverse kinematics solutions are calculated...
This study evaluates the usage of tactile feedback to aid cooperative object manipulation using the SkeweR technique. This technique is based on the use of crushing points, where the users grab the object for the first time, to simultaneously move/rotate an object. Once the user keeps his hand positioned on the crushing point, during the object manipulation, the interaction becomes more natural, in...
Master-slave surgical robots have been studied and developed to support surgeons. Robotic functions such as motion scaling and hand shaking correction can extend the ability of surgeons. However, some problems are remaining in robotic surgery. Operation time which can become the burden to surgeons is still long. Surgeons must assess the situation, decide the next task correctly, and achieve tasks...
Haptic skills are essential for effective Cardiopulmonary Resuscitation (CPR). Existing CPR training simulators provide unrealistic chest conditions. It is assumed that the CPR performance on a real human chest is the same even when the trainees have learnt on unrealistic dummy chests. To test this assumption we have developed an immersive Virtual Reality based CPR simulator in which force feedback...
Nowadays, people have to face many challenges In order to become familiar with all the functionalities of electronical devices. The training process becomes thus essential, especially when we are referring to consumer electronics created for people with disabilities. Our paper presents the importance of training visually impaired people for an advanced sensory substitution device. By using the advantages...
In recent years, Japanese tea ceremony has become increasingly popular outside of Japan. In Japan, there are many tea ceremony facilities (called chashitsu). However, there is not enough number of both chashitsu, and tea masters outside of Japan. In this paper, we propose virtual chashitsu that allows remotely located tea masters and students to practice Otemae (tea-serving manners) by using a common...
This paper aims to study the process of converting the depth information of a real scene captured in a real environment into a tactile representation through a haptic device. We developed a belt-shaped interface with a matrix of 35 (7x5) vibrotactile actuators attached to the users' abdomen. Tests demonstrated that the device can help users to perceive the movement of objects and people, as well as...
This paper presents a lightweight haptic interface (200 g) suitable for tele-robotics and virtual reality applications. The kinematics architecture of the interface consists of a total of 3DOFs that are measured by endless-rotation potentiometers. As main novelty the end-effector includes three vibrating motors displaced with an angle of 120° one from another and capable to generate vibrations with...
In daily life it is necessary to learn skills that can be applied in different tasks and different contexts. Usually these skills are acquired by observation or by direct physical training with another expert person. The critical point is to know which is the best possible way to achieve this knowledge acquisition. In this work we have proposed a collaborative environment where subjects with different...
Motor relearning after stroke is a lengthy process which should be continued after patients get discharged from the clinic. This project aims at developing a system for telerehabilitation which enables stroke patients to exercise at home autonomously or under supervision of a therapist. The system includes haptic therapy devices which are more promising and beneficial for stroke rehabilitation than...
Mastery of a shot technique is one of the important skills to be developed by novice badminton players. A shot technique includes the application of effort and swing of the arm. It is desirable for a novice badminton trainee to visualize the above parameters immediately after playing a shot. There has been an inadequate utilization of wearable technology for visualizing of these aspects. Myo armband,...
Intelligent vehicles operating in different levels of automation require the driver to fully or partially conduct the dynamic driving task (DDT) and to conduct fallback performance of the DDT, during a trip. Such vehicles create the need for novel human-machine interfaces (HMIs) designed to conduct high-level vehicle control tasks. Multimodal interfaces (MMIs) have advantages such as improved recognition,...
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